Comprehensive mortgage calculator

For many New Zealanders a mortgage is their biggest financial commitment. It's important to manage it well. This calculator is here to help.

What this calculator provides

Sometimes unforeseen mortgage costs can sneak into the total amount you will borrow. Use this page to work out the total mortgage you need.

By providing your mortgage total, interest rates and frequency of repayments, you will see the total cost of your mortgage over time.

Shows the total principal and interest paid each year over the life of your mortgage in easy to read graphs and tables.

Set goals within your mortgage by showing what you need to repay each week, fortnight or month to get your mortgage to a certain amount.

See how a change in interest rates would affect your mortgage repayments, or the time to repay your mortage.

At any stage during your calculation your workings and results can be viewed on the mortgage summary sheet and saved in My Plan and/or printed off.

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Prior to changing your personal finances as a result of this calculation we recommend you view our disclaimer.

Notes on this calculator

Results are in today's dollars – this means that any amount you pay or receive in the future will have the same buying power as this many dollars today.

For example, if you could buy something worth $1000 now, in 10 years time, you would need $1220 ("nominal dollars") to buy that same thing (assuming 2% inflation). The $1220 nominal dollars in ten years time is equivalent to $1000 today's dollars.This means that the actual dollar amounts that you pay or receive are likely to be more than the figure quoted here, but it will have the same current buying power.

Learn more about Today's Dollars.
The total level of repayments are assumed to remain constant so that when one mortgage is paid off the repayments for that mortgage are transferred to another mortgage.
Repayments are not assumed to increase each year.
These calculators are designed to give you ballpark figures only - in other words, they won't be exact to the absolute dollars and cents.
You don't need to use dollar signs or commas when inserting dollar amounts. Example: 10500 not $10,500. [back]